Is it normal for the charger head to get hot while charging?
When charging a smartphone, we sometimes notice the charger head feels hot. Some consider this normal, while others immediately panic, fearing a short circuit or battery damage. Interestingly, not everyone knows when a charger's heat is normal and when it could be a warning sign. The question is, what exactly is happening inside the charger that generates heat? And is this condition safe for long-term use?
Some smartphone users even feel that the faster the charger charges, the higher the temperature. But is charging speed really the primary cause? Or are there other factors that are rarely considered? This article will discuss this in detail, but don't rush to conclusions. Let's start with an overview of the common causes first.
What Causes the Charger Head to Get Hot?
The heat generated in a charger doesn't just happen. An internal process triggers the high temperature. Chargers work by converting AC current (household electricity) into DC current, which is safe for smartphone batteries. This conversion process generates energy, some of which is not fully transferred as power; some is converted into heat.
Some common causes of chargers getting hot:
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Power conversion process Chargers convert high voltages to low voltages. The faster and greater the power output, the more heat is generated.
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Fast charging adapter Chargers with fast charging technology require more energy to charge the battery faster, so the temperature increases more easily.
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Charger material and quality Original chargers have components that are more stable in controlling heat than cheap or fake chargers.
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Inappropriate charging cable A low-quality cable can force the charger to work harder and increase heat.
The temperature of the charger can be influenced by many factors.
Interestingly, the heat from the charger doesn't just come from the adapter itself, but is also influenced by other external conditions. Even the position you place the charger in while charging can play a role.
The following environmental factors are often overlooked:
- The charger is covered with an object such as a pillow or blanket
- Charging in the car during hot weather
- Placed near other electronic devices that generate heat
- Charge while using it to play games for hours
A hot environment makes it difficult for the charger to release the heat it generates. As a result, heat becomes trapped and builds up.
How to Know if the Charger Temperature is Still Normal?
Not all heat is dangerous. A normal charger is usually warm to slightly hot to the touch, especially if it's equipped with fast charging. However, there are some signs to look for as early warning signs.
Signs are still normal if:
- The charger only feels warm and not stinging.
- Heat appears when in use, but decreases when removed.
- No strange smells or buzzing sounds
Abnormal signs if:
- The heat makes your hand reflexively pull the charger.
- Charger changes color, melts, or blackens at the plug
- There is a burning smell or buzzing sound from the adapter.
If any warning signs appear, immediately stop using it and replace the charger.
The Risks of Continuing to Use an Overheating Charger
You might think "as long as it holds a charge, it's fine." But overheating can cause damage that isn't immediately apparent in the short term.
Potential risks:
- Reduce smartphone battery life
- Damage the charger IC in the adapter
- Triggering an electrical short circuit
- In extreme cases it can cause the charger to explode or catch fire.
Lithium-ion batteries have specific temperature limits. When the charger overheats, the battery also experiences the effects.
How to Fix a Charger That Heats Up Quickly
If you want safer charging and a longer-lasting charger, try the following steps:
1. Use the original charger
Non-original chargers do not always have temperature protection or current control.
2. Place the charger in an open space
Avoid placing the charger in a closed place or on heat-absorbing materials such as mattresses or pillows.
3. Remove the phone case when charging.
The casing makes it difficult for the phone to dissipate heat, making the charging process more difficult.
4. Avoid using your phone while charging.
Especially for heavy gaming or video streaming.
5. Use the right cable
Fast charging output can only be stable if the cable supports large current.
Does Fast Charging Make Your Charger Break Down Faster?
Fast charging technology does generate a higher current, causing the charger to feel hotter. However, if the charger is safety-certified, the heat is still within safe limits. Fast charging will automatically reduce the power once the battery reaches a certain percentage to maintain a stable temperature.
However, cheap chargers without safety systems don't have this capability. As a result, the charger operates at high output and becomes very hot.
When is the Right Time to Replace Your Charger?
Replace the charger if:
- Heat until it smells burnt
- There is a spark or buzzing sound
- Charger is charging slowly and getting unusually hot
- The charger cable often breaks or the connector is loose
Using the wrong charger is more expensive than buying the right charger.
So, the conclusion...
It's normal for the charger head to feel warm while charging, especially with fast charging chargers. However, if the heat becomes intense, smells burnt, or causes the adapter to change color, this is not normal and could be dangerous to your device and your safety. Use an original charger, ensure your phone is not in use while charging, avoid enclosed spaces, and pay attention to the condition of the cable. You can also find information and tips like this on ajakteman.com in other helpful articles about gadgets and everyday technology.